
  $(document).ajaxSend(function(event,xhr,options){
            xhr.setRequestHeader("user_token",localStorage.getItem("userToken"));
        });
 $(document).ajaxError(function(event,xhr,options,exc){
    if(xhr.status==401){
        location.href= "blog_login.html";
    }
 })   
 
 function getUserInfo(url){
            $.ajax({
                type: "get",
                url: url,
                success:function(result){
                    var userInfo=result.data;
                    $(".left .card h3").text(userInfo.userName);
                    $(".left .card a").attr("href",userInfo.githubUrl);
                }
            });
        }

function logout(){
    localStorage.removeItem("userToken");
    localStorage.removeItem("loginUserId");
    location.href="blog_login.html";
}
